20717284

素因数分解:

$2^2\times 7^1\times {\mathrm{257}}^1\times {\mathrm{2879}}^1$

素因数の和:3147

約数の個数: 24

約数和(自身を含む): 41610240

約数和(自身を除く): 20892956

約数列:

[1, 2, 4, 7, 14, 28, 257, 514, 1028, 1799, 2879, 3598, 5758, 7196, 11516, 20153, 40306, 80612, 739903, 1479806, 2959612, 5179321, 10358642, 20717284]

約数ペア:

[(1, 20717284), (2, 10358642), (4, 5179321), (7, 2959612), (14, 1479806), (28, 739903), (257, 80612), (514, 40306), (1028, 20153), (1799, 11516), (2879, 7196), (3598, 5758)]